Nick Broomfield is well known for his documentary films like Kurt and Courtney, Heidi Fleiss: Hollywood Madam, and Fetishes, but this is his first time working with a script on a narrative film. At least, that's what he'd like to have you believe. He told us during the Q&A that he had previously made a scripted film, but that it was, "such shit, and no one ever saw it." Thankfully, Ghosts was extremely compelling and has hopefully encouraged him to make more scripted films.
While this isn't a documentary film, Broomfield worked with what he knew and this movie is filmed very documentary-style. The cameras are mostly handheld, and at times subtitles will pop up at the bottom of the screen with information like: "These workers typically make £30 per month" and so on. It isn't jarring enough to take you out of the story, but what it cleverly manages to do is make you feel like you're watching a documentary subject at times.